The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution

Autores
Caldwell, Michael Wayne; Nydam, Randall L.; Palci, Alessandro; Apesteguía, Sebastián
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation. We report here on snake fossils that extend the record backwards in time by an additional ∼70 million years (Middle Jurassic-Lower Cretaceous). These ancient snakes share features with fossil and modern snakes (for example, recurved teeth with labial and lingual carinae, long toothed suborbital ramus of maxillae) and with lizards (for example, pronounced subdental shelf/gutter). The paleobiogeography of these early snakes is diverse and complex, suggesting that snakes had undergone habitat differentiation and geographic radiation by the mid-Jurassic. Phylogenetic analysis of squamates recovers these early snakes in a basal polytomy with other fossil and modern snakes, where Najash rionegrina is sister to this clade. Ingroup analysis finds them in a basal position to all other snakes including Najash.
Fil: Caldwell, Michael Wayne. University of Alberta; Canadá
Fil: Nydam, Randall L.. Department Of Anatomy, Midwestern University, Glendale; Estados Unidos
Fil: Palci, Alessandro. South Australian Museum. Earth Sciences Section; Australia
Fil: Apesteguía, Sebastián. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Biological sciences
Evolution
Paleontology
Snake origins
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/37995
Acceder
id CONICETDig_25d48e31fb9609108a3fb0b87a0ea9e3
oai_identifier_str oai:ri.conicet.gov.ar:11336/37995
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolutionCaldwell, Michael WayneNydam, Randall L.Palci, AlessandroApesteguía, SebastiánBiological sciencesEvolutionPaleontologySnake originshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation. We report here on snake fossils that extend the record backwards in time by an additional ∼70 million years (Middle Jurassic-Lower Cretaceous). These ancient snakes share features with fossil and modern snakes (for example, recurved teeth with labial and lingual carinae, long toothed suborbital ramus of maxillae) and with lizards (for example, pronounced subdental shelf/gutter). The paleobiogeography of these early snakes is diverse and complex, suggesting that snakes had undergone habitat differentiation and geographic radiation by the mid-Jurassic. Phylogenetic analysis of squamates recovers these early snakes in a basal polytomy with other fossil and modern snakes, where Najash rionegrina is sister to this clade. Ingroup analysis finds them in a basal position to all other snakes including Najash.Fil: Caldwell, Michael Wayne. University of Alberta; CanadáFil: Nydam, Randall L.. Department Of Anatomy, Midwestern University, Glendale; Estados UnidosFil: Palci, Alessandro. South Australian Museum. Earth Sciences Section; AustraliaFil: Apesteguía, Sebastián. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaNature Publishing Group2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37995Caldwell, Michael Wayne; Nydam, Randall L.; Palci, Alessandro; Apesteguía, Sebastián; The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution; Nature Publishing Group; Nature Communications; 6; 5996; 1-20152041-1723CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms6996info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/ncomms6996info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:08:02Zoai:ri.conicet.gov.ar:11336/37995instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:08:03.031CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
title The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
spellingShingle The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
Caldwell, Michael Wayne
Biological sciences
Evolution
Paleontology
Snake origins
title_short The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
title_full The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
title_fullStr The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
title_full_unstemmed The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
title_sort The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution
dc.creator.none.fl_str_mv Caldwell, Michael Wayne
Nydam, Randall L.
Palci, Alessandro
Apesteguía, Sebastián
author Caldwell, Michael Wayne
author_facet Caldwell, Michael Wayne
Nydam, Randall L.
Palci, Alessandro
Apesteguía, Sebastián
author_role author
author2 Nydam, Randall L.
Palci, Alessandro
Apesteguía, Sebastián
author2_role author
author
author
dc.subject.none.fl_str_mv Biological sciences
Evolution
Paleontology
Snake origins
topic Biological sciences
Evolution
Paleontology
Snake origins
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation. We report here on snake fossils that extend the record backwards in time by an additional ∼70 million years (Middle Jurassic-Lower Cretaceous). These ancient snakes share features with fossil and modern snakes (for example, recurved teeth with labial and lingual carinae, long toothed suborbital ramus of maxillae) and with lizards (for example, pronounced subdental shelf/gutter). The paleobiogeography of these early snakes is diverse and complex, suggesting that snakes had undergone habitat differentiation and geographic radiation by the mid-Jurassic. Phylogenetic analysis of squamates recovers these early snakes in a basal polytomy with other fossil and modern snakes, where Najash rionegrina is sister to this clade. Ingroup analysis finds them in a basal position to all other snakes including Najash.
Fil: Caldwell, Michael Wayne. University of Alberta; Canadá
Fil: Nydam, Randall L.. Department Of Anatomy, Midwestern University, Glendale; Estados Unidos
Fil: Palci, Alessandro. South Australian Museum. Earth Sciences Section; Australia
Fil: Apesteguía, Sebastián. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation. We report here on snake fossils that extend the record backwards in time by an additional ∼70 million years (Middle Jurassic-Lower Cretaceous). These ancient snakes share features with fossil and modern snakes (for example, recurved teeth with labial and lingual carinae, long toothed suborbital ramus of maxillae) and with lizards (for example, pronounced subdental shelf/gutter). The paleobiogeography of these early snakes is diverse and complex, suggesting that snakes had undergone habitat differentiation and geographic radiation by the mid-Jurassic. Phylogenetic analysis of squamates recovers these early snakes in a basal polytomy with other fossil and modern snakes, where Najash rionegrina is sister to this clade. Ingroup analysis finds them in a basal position to all other snakes including Najash.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/37995
Caldwell, Michael Wayne; Nydam, Randall L.; Palci, Alessandro; Apesteguía, Sebastián; The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution; Nature Publishing Group; Nature Communications; 6; 5996; 1-2015
2041-1723
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37995
identifier_str_mv Caldwell, Michael Wayne; Nydam, Randall L.; Palci, Alessandro; Apesteguía, Sebastián; The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution; Nature Publishing Group; Nature Communications; 6; 5996; 1-2015
2041-1723
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms6996
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/ncomms6996
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842980373303132160
score 12.993085

Publicaciones similares